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Method for estimating self-interference signal based on iterative estimation and apparatus using the same

a self-interference signal and iterative estimation technology, applied in the direction of electrical equipment, transmitter monitoring, transmission monitoring, etc., can solve the problem that the signal received from the transceiver may act as interference, and achieve the effect of effectively estimating and eliminating the self-interference signal

Active Publication Date: 2021-01-19
ELECTRONICS & TELECOMM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a method and apparatus for effectively estimating and eliminating a self-interference signal in a full-duplex environment. This is achieved by transmitting two preamble signals and estimating the third-order nonlinear distortion that distorts the self-interference signal using a processor and memory. The invention enables the efficient estimation of the self-interference signal and reduction of interference, resulting in improved communication quality.

Problems solved by technology

However, when signals are simultaneously transmitted and received, a signal transmitted from a transceiver may act as interference on a received signal.

Method used

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  • Method for estimating self-interference signal based on iterative estimation and apparatus using the same
  • Method for estimating self-interference signal based on iterative estimation and apparatus using the same

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Embodiment Construction

[0031]The present invention will be described in detail below with reference to the accompanying drawings. Repeated descriptions and descriptions of known functions and configurations which have been deemed to unnecessarily obscure the gist of the present invention will be omitted below. The embodiments of the present invention are intended to fully describe the present invention to a person having ordinary knowledge in the art to which the present invention pertains. Accordingly, the shapes, sizes, etc. of components in the drawings may be exaggerated in order to make the description clearer.

[0032]Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0033]FIG. 4 is a view that shows an example of a transceiver system using a full-duplex terminal.

[0034]Referring to FIG. 4, the full-duplex terminal 410, in which transmission and reception are simultaneously performed, may receive a downlink signal transmi...

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Abstract

Disclosed herein are a method for estimating a self-interference signal based on iterative estimation and an apparatus for the same. The method is configured to transmit two preamble signals from the transmission antenna of one terminal to the reception antenna thereof, to estimate third-order nonlinear distortion, which distorts a self-interference signal, based on a transmission signal and a reception signal for each of the two preamble signals, to update the reception signal by eliminating the third-order nonlinear distortion therefrom, to re-estimate the third-order nonlinear distortion based on the updated reception signal, and to estimate the self-interference signal based on the final third-order nonlinear distortion, which is acquired by repeatedly re-estimating the third-order nonlinear distortion as many times as a preset number of iterations.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2017-0169503, filed Dec. 11, 2017, which is hereby incorporated by reference in its entirety into this application.BACKGROUND OF THE INVENTION1. Technical Field[0002]The present invention relates generally to a method for estimating a self-interference signal in a wireless communication signal, and more particularly to a method and apparatus for estimating a self-interference signal based on iterative estimation in which a self-interference signal is effectively estimated using third-order nonlinear distortion that is generated due to a channel and the use of a high-power amplifier.2. Description of the Related Art[0003]As shown in FIG. 1, when a base station 100 communicates with terminals 110 and 120 using an uplink and a downlink, a general communication system allocates different channels, acquired by dividing a frequency band, or different time slots to the uplink...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04L5/14H04B17/14H04B1/525H04B1/50H04B1/56H04B1/10H04B1/04H04B17/345
CPCH04B1/1027H04B1/04H04B1/525H04B17/14H04B17/345H04L5/14H04B1/50H04B1/56H04B2001/0408H04B15/02H04B17/13
Inventor BAEK, MYUNG-SUNJUNG, JOON-YOUNGKIM, HEUNG-MOOK
Owner ELECTRONICS & TELECOMM RES INST
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